Every time a component is tested in extreme temperature conditions, it becomes a challenge to design a reliable test setup. If in addition, components must be in vacuum conditions and electro-optical characterization is required at different temperatures, complexity increases exponentially.
In this success case, we present a complete Lot Acceptance Test (LAT) sequence that involves a high volume of tests (Mechanical, Environmental, Radiation, Assembly, ESD,..). But, on this occasion, the most tricky test to carry out was the Endurance test, where 12 lasers from different wavelengths (NIR, SWIR1, and SWIR3, from 350nm to 5um) were powered at their nominal current during 1000 hours while in vacuum conditions.
In this success case, we present two different challenges we had to face to meet the requirements of power laser users:
High power lasers (30watts in this case) require specific test setups and important safety considerations to avoid dangerous situations happening in DUT/setup failure.
Exposure to vacuum may cause changes in filling isolating materials even at room temperature conditions. HV Optocouplers are used to connect two different circuits while maintaining high electrical isolation between them.
A Lot Acceptance Test (LAT) is a reduced set of Qualification tests over components or equipment, required to accept a specific manufacturing lot for its use. A LAT sequence allows customers to have complete traceability of the components they are going to use in their application, starting from the wafer used during manufacturing.
The CPPA (Coordinated Parts Procurement Agency) is responsible for the engineering, testing and procurement of the EEE parts of a certain space mission. This structure has a dedicated contractual framework designed for the Users´ benefits
As part of a comprehensive service to our customers, Alter Technology controls every phase of the product’s logistics from the manufacturer to the final delivery to the customer. The status of each component can easily be checked through our web-based reporting tools.
Optical Transceivers for Space Communications
Communication networks have entered the Exabyte-era and the new Internet-style communications and data-centric applications are reshaping the network landscape and the corresponding markets from ground-to-space.